diff --git a/dicp/dicp/vendor/AscendGraph/codegen/ascend.py b/dicp/dicp/vendor/AscendGraph/codegen/ascend.py
index 579616351..8297d22db 100644
--- a/dicp/dicp/vendor/AscendGraph/codegen/ascend.py
+++ b/dicp/dicp/vendor/AscendGraph/codegen/ascend.py
@@ -877,7 +877,7 @@ def Identity(name, input, index):
         return op.to_node()
 
     @staticmethod
-    def IdentityInp(name, input, dst):
+    def IdentityInp(name, input, dst=None):
         op = OP(name, "Identity")
         op.set_input("x", input)
         return op.to_node()
@@ -997,7 +997,7 @@ def Cast(name, x, ascend_dtype, device=None):
 
 
     @staticmethod
-    def CastCpu(name, x, ascend_dtype, device='cpu'):
+    def CastCpu(name, x, ascend_dtype, device=None):
         cast_op = OP(name, "Cast")
         cast_op.set_input("x", x)
         cast_op.set_attr_int("dst_type", get_ascend_dtype_num(ascend_dtype))
diff --git a/dicp/dicp/vendor/AscendGraph/conversion.py b/dicp/dicp/vendor/AscendGraph/conversion.py
index a7b3f64fb..7ac81ad92 100644
--- a/dicp/dicp/vendor/AscendGraph/conversion.py
+++ b/dicp/dicp/vendor/AscendGraph/conversion.py
@@ -923,7 +923,7 @@ def copy_(self, dst, src):
 
     @register_conversion(torch.ops.aten.copy)
     def copy(self, dst, src):
-        return self.get_proxy(ascend_op.Identity, (src, None))
+        return self.get_proxy(ascend_op.IdentityInp, (src, dst))
 
     @register_conversion(torch.ops.aten.unsqueeze)
     def unsqueeze(self, x, dim):